Your mattress isn’t terrible, but it’s not great either. Maybe it’s gone slightly flat after a few years, or it was always a bit too firm, or you bought the cheapest one available when you moved house and now your back disagrees with that decision every morning. A mattress topper sits on top of your existing mattress and changes the feel without the cost of replacing the whole thing. Done right, it’s the best £50-200 you’ll spend on sleep.
Done wrong, it’s a lumpy sheet of foam that slides off the mattress at 3am. This guide covers which types work, which are worth the money, and how to choose the right one for how you sleep.
In This Article
- What a Mattress Topper Actually Does
- Types of Mattress Topper
- Memory Foam Toppers
- Feather and Down Toppers
- Latex Toppers
- Microfibre and Hollowfibre Toppers
- Wool Toppers
- How to Choose the Right Thickness
- Sleeping Position and Topper Choice
- Keeping Your Topper in Place
- Care and Lifespan
- When a Topper Won’t Help
- Frequently Asked Questions
What a Mattress Topper Actually Does
A mattress topper is a removable layer — typically 3-10cm thick — that sits on top of your mattress and changes the sleeping surface. It’s held in place by elastic straps, a fitted skirt, or simply the weight of your fitted sheet over the top.
What It Can Fix
- A mattress that’s too firm — a soft topper adds a comfort layer without replacing the support underneath
- A mattress that’s lost its top comfort layer — foam and springs compress over time, and a topper restores the cushioning
- Temperature problems — cooling gel toppers help hot sleepers, wool toppers regulate temperature naturally
- A guest bed that needs improving — a topper on a basic mattress makes it acceptably comfortable for visitors without the cost of a proper mattress
What It Can’t Fix
- A mattress that’s completely worn out — if the springs are poking through or the mattress sags in the middle, a topper won’t compensate for broken support. Our guide to choosing a mattress covers when replacement is the right call
- A mattress that’s too soft — toppers add softness, not firmness. You can’t make a saggy mattress firm with a topper on top
- Structural problems — a broken bed frame or inadequate slat system causes issues that a topper can’t address
Topper vs Mattress Pad vs Protector
These terms get confused constantly. A mattress protector is a thin waterproof or water-resistant cover that protects the mattress from spills and stains — it doesn’t change the feel. A mattress pad is a thin quilted layer that adds minimal cushioning. A topper is thick enough to change how the mattress feels when you lie on it — typically 5cm or more.
Types of Mattress Topper
Each filling type creates a different sleeping experience. Price ranges, temperature behaviour, and durability vary widely.
- Memory foam — contouring, pressure relief, tends to sleep warm. £40-200
- Feather and down — soft, luxurious, traditional hotel feel. £60-250
- Latex — responsive, supportive, naturally cooling. £80-300
- Microfibre and hollowfibre — budget-friendly, hypoallergenic, less durable. £20-60
- Wool — temperature regulating, naturally moisture-wicking. £80-250
Memory Foam Toppers
Memory foam is the most popular topper material in the UK, and for good reason — it does the job it’s designed for (pressure relief and contouring) very well.
How It Feels
Memory foam softens with body heat, allowing your body to sink into the surface and creating a cradling effect. Pressure points — hips, shoulders, lower back — get more support because the foam moulds around them rather than pushing back uniformly. When you change position, there’s a slight delay as the foam recovers — the classic slow-motion hand impression.
The Heat Problem
Standard memory foam traps heat. Your body warms the foam, the foam holds the warmth, and you wake up overheated. This is the single biggest complaint about memory foam toppers. Gel-infused memory foam helps — the gel absorbs and disperses heat better — but it doesn’t eliminate the problem entirely. If you sleep hot, consider a gel memory foam topper or look at latex or wool instead.
Best Memory Foam Toppers UK
- Silentnight Impress (about £45-70 for a double) — the affordable standard. 5cm depth, reasonable density, and widely available from Argos, Amazon, and John Lewis. Not the most durable — expect 2-3 years of good performance — but hard to beat for the price
- Panda Memory Foam Topper (about £100-130) — uses bamboo-infused foam for better breathability. Comes with a bamboo cover that’s removable and washable. Better temperature regulation than the Silentnight
- Emma Mattress Topper (about £170-200) — premium feel with their proprietary foam blend. Good edge-to-edge consistency and a removable cover. The most expensive option here but the closest to a genuine mattress upgrade
Who Should Choose Memory Foam
Side sleepers and anyone with joint pain benefit most from memory foam. The contouring relieves pressure on hips and shoulders where side sleepers concentrate their weight. People who share a bed also benefit because memory foam absorbs movement — your partner turning over won’t transfer through the surface.
Feather and Down Toppers
Feather and down toppers create the plush, sinking-in feel you find in upmarket hotels. They’re the most traditional option and still the go-to for people who want a soft, cloud-like sleeping surface.
The Difference Between Feather and Down
Down is the soft, fluffy undercoating beneath the outer feathers. It’s lighter, loftier, and more expensive. Pure down toppers are the softest but also the most expensive. Most toppers use a blend — typically 80% feather and 20% down — which provides good softness at a more reasonable price. The higher the down percentage, the softer and more expensive the topper.
Best Feather Toppers UK
- Scooms Hungarian Goose Down Topper (about £200-300) — premium quality, ethically sourced down, and a generous fill weight. Comes with a 2-year guarantee. The kind of topper you keep for a decade if you look after it
- John Lewis Natural Duck Feather & Down Topper (about £80-120 for a double) — excellent mid-range option. Good fill weight, machine washable, and backed by the John Lewis guarantee
- Silentnight Ultimate Luxury Feather Topper (about £50-70) — the budget entry point. Less down in the blend, so it’s firmer than the premium options, but still provides a noticeable upgrade in comfort
The Maintenance Reality
Feather toppers need regular fluffing — shake them out and plump them up weekly, or the filling compresses unevenly and creates flat spots. Some are machine washable (check the label — not all are), but washing a feather topper is a commitment. They take a long time to dry thoroughly, and damp feathers can develop mould or odour.
Who Should Choose Feather
Back sleepers who want a soft surface without excessive sinking. Feather toppers provide cushioning without the deep body-moulding of memory foam, so they suit people who move positions frequently during the night. Also anyone who prioritises a natural filling over synthetic.
Latex Toppers
Latex is the underrated option. Less popular than memory foam in the UK market, but arguably better for many sleepers.
Natural vs Synthetic Latex
Natural latex comes from rubber tree sap — it’s sustainable, biodegradable, and naturally hypoallergenic. Synthetic latex (SBR) is a petroleum-based imitation that’s cheaper but less durable and less breathable. Blended latex combines both. For a topper you’ll use nightly for years, natural latex justifies the premium.
How It Differs From Memory Foam
Latex bounces back immediately. Press your hand into a latex topper and it springs back the instant you lift it — there’s no slow recovery like memory foam. This responsiveness means you don’t feel stuck when changing positions. Latex also sleeps cooler than memory foam because its open-cell structure allows better airflow.
Best Latex Toppers UK
- Dormeo Octasmart Plus Topper (about £150-200) — technically a hybrid with latex-like foam and breathable zones. Good cooling properties and responsive feel
- Dunlopillo Latex Topper (about £200-280) — genuine Talalay latex, which is the more refined manufacturing process. Consistent feel across the surface and excellent durability. Should last 5-7 years
Who Should Choose Latex
Hot sleepers, combination sleepers who change positions frequently, and anyone who dislikes the sinking sensation of memory foam. Latex gives pressure relief without the trapped feeling. Also a good choice for people with latex allergies to synthetic materials — though check for actual latex allergy first, as natural latex itself is an allergen for some people.
Microfibre and Hollowfibre Toppers
The budget option. Microfibre and hollowfibre toppers use synthetic polyester fills that mimic the feel of natural fillings at a fraction of the cost.
What You Get
A soft, lofty surface that feels plush initially. The filling is hypoallergenic, machine washable, and quick to dry. At £20-40 for a double, these are the most accessible toppers available. You’ll find them everywhere — Argos, Dunelm, Amazon, B&M.
What You Don’t Get
Longevity. Synthetic fibre toppers compress faster than any other type. The loft that feels luxurious in week one will be noticeably flatter by month three, and after six months of nightly use, most hollowfibre toppers have lost 30-50% of their original height. They’re perfectly fine as a temporary improvement or for guest beds that get occasional use, but they’re not a long-term solution.
Best Budget Toppers
- Silentnight Supersoft Mattress Topper (about £20-30) — does the job for the price. Machine washable, soft feel, won’t last more than a year of daily use
- Slumberdown Climate Control (about £25-35) — adds a temperature-regulation layer that’s mildly effective. Better value than the very cheapest options
Wool Toppers
Wool is the most versatile topper material and the one most UK sleepers overlook.
Temperature Regulation
Wool’s natural structure absorbs and releases moisture — it wicks sweat away from your body in warm weather and insulates in cold weather. This makes wool toppers genuinely all-season in a way no other material matches. The Campaign for Wool highlights this natural temperature regulation as one of wool’s key advantages for bedding.
Comfort and Support
Wool toppers sit between the softness of feather and the support of foam. They don’t contour like memory foam or sink like down — instead, they provide a consistent, gently cushioned surface. Wool has a natural springiness that prevents it from compressing as flat as synthetic fibre.
Best Wool Toppers UK
- The Woolroom Deluxe (about £150-200) — British wool fill, excellent temperature regulation, and a traceable supply chain. Spot-clean only, but wool naturally resists odour and bacteria
- Devon Duvets Wool Mattress Topper (about £180-250) — handcrafted in Devon with British wool. Built to last and comes with a 5-year guarantee
Who Should Choose Wool
Anyone who sleeps hot in summer and cold in winter, allergy sufferers (wool is naturally resistant to dust mites), and people who prefer natural materials with minimal chemical processing.
How to Choose the Right Thickness
3-5cm (Thin)
Adds a comfort layer without changing the fundamental feel of your mattress. Best for mattresses that are close to right but need a slight softness boost. Most budget toppers fall in this range.
5-8cm (Medium)
The sweet spot for most people. Thick enough to make a tired mattress feel new again, but not so thick that your fitted sheet won’t fit over the mattress plus topper. This is the thickness range where memory foam and latex toppers deliver the best balance of comfort and support.
8-10cm (Thick)
A substantial change. At this thickness, a topper functions almost like a thin mattress on top of your existing one. The underlying mattress mainly provides structural support while the topper handles all the comfort. Be aware that 10cm of topper plus your mattress may exceed the depth your fitted sheet can accommodate — check the total depth before buying.
The Sheet Problem
Standard UK fitted sheets accommodate mattresses up to about 30cm deep. If your mattress is 25cm and your topper is 8cm, that’s 33cm total — your fitted sheet won’t fit. Deep-fitted sheets (35cm+) solve this but cost more. Factor the sheet cost into your topper budget, especially for thicker options. Our guide on thread count and bedding quality covers what to look for in replacement sheets.
Sleeping Position and Topper Choice
Side Sleepers
You need pressure relief at the hip and shoulder — the two points where your weight concentrates. Memory foam (5-8cm) or latex toppers work best because they contour around these pressure points. Feather toppers also work but compress more under concentrated weight, offering less consistent support.
Back Sleepers
You need even support across your entire back without excessive sinking at the hips. A medium-firm memory foam topper (5cm, higher density) or a latex topper prevents the hips from dropping too far while still cushioning the spine’s natural curve.
Stomach Sleepers
You need a firmer surface to prevent your hips from sinking and creating lower back strain. Thin toppers (3-5cm) in latex or high-density memory foam work best. Avoid soft feather or thick memory foam toppers — they allow the pelvis to sink, which hyperextends the lower back.
Combination Sleepers
If you change positions throughout the night, latex is the best choice. Its responsive bounce means the surface adjusts quickly as you move, unlike memory foam which needs time to recover between positions.
Keeping Your Topper in Place
The most common complaint about mattress toppers: they slide off the mattress during the night.
Elastic Straps
Most toppers include elastic corner straps that hook under the mattress. These work for the first few months but stretch over time, gradually losing their grip. Replace the elastic if the straps stretch out — replacement topper straps cost about £8-12 and are available on Amazon.
Fitted Topper Covers
Some toppers come with a fitted skirt that wraps around the mattress like a fitted sheet. This is the most secure attachment method and prevents any lateral movement. If your topper doesn’t have one, you can buy a separate fitted topper cover.
The Sheet Method
Simply putting a tight fitted sheet over both the mattress and topper together holds most toppers in place. A deep-fit sheet that grips the mattress snugly keeps everything locked together. This is the simplest solution and costs nothing if you already have deep-fit sheets.
Care and Lifespan
Memory Foam
Spot-clean only — never machine wash. Air out periodically by removing the sheet and letting the foam breathe for a few hours. Rotate head to foot monthly to even out wear. Lifespan: 3-5 years for decent quality, 1-2 years for budget versions.
Feather and Down
Check the label — some are machine washable on a gentle cycle, others require dry cleaning. Shake out and plump weekly. Air in direct sunlight occasionally to freshen (UV kills bacteria). Lifespan: 5-10 years with proper maintenance.
Latex
Wipe with a damp cloth if needed. Never machine wash or tumble dry. Latex degrades when exposed to direct sunlight for extended periods, so air it in a shaded area. Lifespan: 5-8 years, the longest of any topper material.
Synthetic Fibre
Machine washable, which is a genuine advantage. Wash every 2-3 months on a gentle cycle and tumble dry on low heat. The washing accelerates compression, so expect the topper to lose some loft after each wash. Lifespan: 1-2 years.
Wool
Spot-clean and air regularly. Professional cleaning is recommended rather than machine washing, as agitation can felt the wool. Naturally antimicrobial, so it needs cleaning less often than synthetic fills. Lifespan: 5-7 years.
When a Topper Won’t Help
A topper is a surface modification, not a structural repair. It won’t help if:
- Your mattress sags more than 3cm — the sag transfers through the topper, and you’ll still roll into the dip
- The springs are broken or poking through — a topper over broken springs just delays the inevitable
- You have persistent back pain from your mattress — if the mattress support structure is wrong for your body, a topper can’t compensate. The issue is the base, not the surface
- Your mattress is over 10 years old — at this point, the internal structure has degraded beyond what a surface layer can address. The Sleep Council recommends replacing mattresses every 7-8 years
If any of these apply, a new mattress is the right investment. A topper on a broken mattress is money wasted.
Frequently Asked Questions
Can a mattress topper make a firm mattress softer?
Yes, this is one of the main reasons to buy a topper. A 5-8cm memory foam or feather topper over a firm mattress adds a comfort layer that changes the sleeping surface from firm to medium or medium-soft, depending on the topper’s density and thickness.
Do mattress toppers make you hot?
Memory foam toppers tend to trap heat, especially standard non-gel versions. Feather, latex, and wool toppers sleep cooler. If you run hot, choose a gel-infused memory foam, natural latex, or wool topper rather than standard memory foam.
How thick should a mattress topper be?
5-8cm is the sweet spot for most people. Under 5cm makes a subtle difference, over 8cm can make your bed feel too high and may not work with standard fitted sheets. Start with 5cm if you want a moderate improvement, 7-8cm if your mattress needs a major comfort overhaul.
Can you put a mattress topper on a memory foam mattress?
Yes, but avoid putting a memory foam topper on a memory foam mattress — you may end up sinking too deeply. A latex or feather topper over a memory foam mattress adds a different feel on top while keeping the support underneath. This works well if your memory foam mattress sleeps too hot.
Are expensive mattress toppers worth the money?
Up to about £200, yes. Budget toppers under £30 typically last less than a year before compressing. Mid-range toppers between £80-150 offer the best value with 3-5 years of use. Premium toppers above £200 use higher-quality materials that last longer but offer diminishing returns on comfort improvement.